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'11. P. STEVENS.

LAMP.

110.575,81. l PatentedJan. 26,1897.

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(No. Model.) 2 sheets-sheet M. P. STEVENS.

l LAMP. a N0. 575,813 Patented, Jan. 26, 1897.

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MERTON I. STEVENS, OF EAST ORANGE, NEW JERSEY, ASSIGNOR TO THE SAFETY CAR HEATING AND LIGHTING COMPANY, OF NEW YORK, N. Y.

LAM P.

SPECIFICATION forming part of Letters Patent No. 575,813, dated January 26, 1897.

Application filed March 20, 1896. Serial No. 584,021. v(No model.)

To all whom t may concern: It will be seen by reference to Fig. l that a Be it known that I, MERTON P. STEVENS, a distributing expansion -chamber L is susresident of East Orange, Essex county, State pended from the main casting A and in comof New Jersey, haveinvented certain new and municationwith the pipe E, which conducts 5 useful Improvements in Lamps, of which the gas to the lamp. This distributing expanfollowing is a specification. sionchamber replaces the three pipes here- My invention relates to lamps, more partofore used for conducting gas to the flame ticularly to that class of gas-lamps which are and is preferably dome-shaped interiorly, as used for lighting railway-cars. shown. The lower end of this eXpansion- 6o to My invention consists in the new and imchamber A is shown as closed bya screw-plug proved burner arrangement hereinafter 'set IWI, through which burner-tubes d are passed. forth and claimed. These burner-tubes extend for lsome little My invention will be understood by referdistance into the distributing expansionring to the accompanying drawings,which exchamber L, and are shown as passed through I 5 hibit a lamp made in accordance with my ina ring N, which serves to hold their lower eX- vention, Figure l being a transverse vertical tremities in position. Arod O, which carries section through the lamp, Fig. 2 beinga seca spreader P, is shown as socketed in the tion on line 2 2 of Fig. 1, and Fig. 3 a section plug M. through the distributing expansion-chamber The burner which I have just described is 7o 2o on line 3 3 of Fig. 1. contained within the periphery of the refiec- In the drawings, A represents the main tor G, the space between the burner and the casting of the lamp, whichsupports above it reflector being in open communication with the hood B and the chimney C, and is itself the outside air through the ducts b. The supported by the pipes D and E. Pendent main casting A, the duct-casting, the burner, 2 5 from the castingAis a casting F, comprising the hood, and chimney are enveloped by a ducts ce, between whicharepassages b. (Best casing comprising a middle section Q, from seen in Fig. 2.) Pendent from the duct-castwhich a top section R and perforated hooding is a reiiector G,which is preferably frustosection S are supported,which middle section conical, as shown, and backed by a casing also supports alower section T, preferably of 8o 3o G', which is in communication with the ducts glass, which is shown as extending as far and extending to or about the lower ends of down as the lower edge of the two-part ring. the burner-tubes forms a straight passage for Air is brought to the flame through the space the air-supply to the ame and has an airbetween the enveloping section T through distributer V in the path of the air. The the ducts b into the straight frusto-conical 35 duct-castingFalso supportsatwo-part globepassage U between the burner and the resupporting ring comprising the rings I-I I, flector, where part of the air passes between which support a globe J ,which surrounds the the burner-tubes into the spreader to spread reflector. The ring I also supports a shade the iiame, and part passes outside of the K, which surrounds the globe J and is mainburner -tubes to feed the upper side of the 9o A 4o tained in position by suitable suspendingiiame, so that the result is an outwardly-burnbrackets c, only one of which is shown. The ing Argand ame. The gas is broughtio the ducts a communicate with the inside of the flame by the tube E into the distributing exglobe J outside of the peripheryof the reflecpansiou-chamber L,whence it passes into the tor G, the ducts also communicating with the upper ends of the tubes and is emitted at the 45 hood B, so that the products of combustion lower ends, where the air is brought in c oncan pass between the reflector G and the globe tact therewith. J through the ducts a and the hood B and Having described my invention, what I chimney C out of the lamp. claim, and desire to secure by Letters Patent, We come now to the description of the is Ico 5o burner proper, to which my improvements are The combination of a distributing expanmainly directed. sion-chamber, burner-tubes spaced apart and entered into the expansion-chamber for a portion of their length, :t spreader extending from within the circle formed by the burnertubes to a level below the lower end Of the 5 burner-tubes, :L removable combined reflector and casing surrounding the said burner-tubes and extending to a point at o1" near the lower ends thereof, and air-ducts leading into the combined reflector and casing, whereby the 1o gas may be evenly distributed tO the llame by the distributing expansion-chamber and both sides 01"; the llame be fed with stir from the inside of the reflector, the air contacting with the expansion-chamber on its passage into the lamp and passing around the outside of the reflector on its passage from the lamp,

substantially asV described and for the pur poses set forth.

MERTON P. STEVENS. W'itnesses:

GEO. E. MORSE, MAURICE BLOCK. 

